every 100,000 mile's
60,000 miles
The maintenance interval is every 60,000 miles.
The recommended spark plug gap for a 1987 Volvo (all models) is .028"
spark plug gap is .028
.30
gap is .028
0.30
replace spark plug wires on a 99 sonoma
NGK spark plug part number BPR5ES
0.045
.030